Notification Tutorial

Using Big View Styles

How to customize big content view

// Supply custom RemoteViews to use instead of the platform template
// in the expanded form
public Builder setCustomBigContentView(RemoteViews contentView);

How to expand big content view by default

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A notification's big view appears only when the notification is expanded, which happens when

the notification is at the top of the notification drawer, or

the user expands the notification with a gesture.

However, there is a trick to push the notification to the top of the list where it would be expanded: setOngoing(true).

How to update notification

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// Sets an ID for the notification, so it can be updated
mNotificationManager.notify(NOTIFICATION_ID, mNotificationBuilder.build());

// Use the SAME Builder for each update.
mNotificationBuilder.setContentText("new text");

// Because the ID remains unchanged, the existing notification is updated.
mNotificationManager.notify(NOTIFICATION_ID, mNotificationBuilder.build());

How to display big text (longer text)

public Builder setStyle(
    new NotificationCompat.BigTextStyle().bigText(CharSequence cs);

How to fix crash - RemoteServiceException: Bad notification posted from package: Couldn't expand RemoteViews

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for unknown reason you are not allowed to reference dimen in the root view of the custom remote view! so you have to hard code it like android:layout_height="128dp"